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Grimmspeed Up Pipe 3-Bolt Inlet - Subaru 2002-2014 WRX / 2004-21 STI / 2005-2009 LGT / 2004-2013 FXT | 007064
Regular price $269.00Regular priceUnit price per$269.00Sale price $269.00 -
GrimmSpeed 15-21 Subaru STI StealthBox Cold Air Intake Red | 060078
Regular price $349.00Regular priceUnit price per$349.00Sale price $349.00 -
Tomei 02-07 WRX / 04-21 STI / 04-08 FXT Silicone Turbo Inlet Hose Black | TB301A-SB01B
Regular price $190.00Regular priceUnit price per$190.00Sale price $190.00 -
HKS SSQV4 Blow Off Valve - Universal | 71008-AK001
Regular price $250.75Regular priceUnit price per$295.00Sale price $250.75Sale -
Perrin Oil Cap Round Style Black Most Subaru Models | PSP-ENG-711BK
Regular price $52.88Regular priceUnit price per$82.00Sale price $52.88Sale -
Killer B Motorsport 02-14 WRX / 04-21 STI 4-1 Holy Header Exhaust Manifold 2 Bolt | HH-2BOLT
Regular price $1,539.00Regular priceUnit price per$1,539.00Sale price $1,539.00 -
Nameless Performance 3in Quad Exit Axle Back Exhaust Polished Subaru 15-2020 WRX / 15-2018 STI | RSPD013
Regular price $580.00Regular priceUnit price per$580.00Sale price $580.00 -
GrimmSpeed Exhaust Gasket Kit 6 Piece - Subaru EJ Turbo | 020040
Regular price $99.00Regular priceUnit price per$99.00Sale price $99.00 -
Invidia 15-21 Subaru WRX/STI Q300 Cat Back Exhaust w/ Double Wall Stainless Steel Tips | HS15STIG3S
Regular price $1,240.40Regular priceUnit price per$1,772.00Sale price $1,240.40Sale -
PLM Subaru WRX & STI 2015 - 2021 Axle-Back Exhaust / Muffler Deletes V1 Poish / Titanium Tip
Regular price From $299.00Regular priceUnit price per$350.00Sale price From $299.00Sale -
Compressive Tuning 15-21 Subaru WRX/STI Smart Flow Radiator Shroud | SFS151 Black/Red/Silver
Regular price From $270.00Regular priceUnit price per$0.00Sale price From $270.00 -
Grimmspeed 15-21 Subaru WRX/STI Fender Shroud Kit Black | 096049
Regular price $89.00Regular priceUnit price per$89.00Sale price $89.00 -
APR 08-14 Subaru WRX / 08-21 STI Carbon Fiber Alternator Cover | CBE-WRXALT08
Regular price $147.66Regular priceUnit price per$154.00Sale price $147.66Sale -
Grimmspeed 15-21 STI Front Mount Intercooler Kit Black Core w/ Red Piping | 090258
Regular price $1,679.00Regular priceUnit price per$1,679.00Sale price $1,679.00 -
GrimmSpeed 02-07 WRX / 04-21 STI Intercooler Y-Pipe Gaskets | 020024
Regular price $16.00Regular priceUnit price per$16.00Sale price $16.00 -
Perrin 08-21 Subaru WRX/STI Upper Radiator Bracket Set Red | PSP-ENG-521
Regular price $52.88Regular priceUnit price per$82.00Sale price $52.88Sale
Optimize your Subaru STI 2015-2021 engine's performance with a comprehensive range of top-quality aftermarket parts from industry-leading brands. Elevate the power and efficiency of your vehicle with ETS, HKS, Perrin, Mishimoto, AMS, Grimmspeed, Cobb, Remark, PLM, Turbosmart, IAG Performance, and more. Enhance airflow and filtration through AIR INTAKE DUCTS and COLD AIR INTAKES, while maintaining engine cleanliness with AIR OIL SEPARATORS and CATCH CANS. Experience impeccable control and responsiveness with BLOW OFF VALVES and BOOST CONTROL SOLENOID COVERS, complemented by the reliability of ENGINE MOUNTS and meticulously crafted ENGINE MANAGEMENT HARNESSES. Simplify maintenance and improve overall performance with DIPSTICKS and explore comprehensive ENGINE PACKAGE DEALS for a holistic approach to upgrading your Subaru WRX's engine. Unleash the full potential of your vehicle through precision-engineered components designed to deliver both power and durability, all meticulously designed to give your Subaru STI the edge on the road or track.